Metal-working machine.



C. M. CONRADSON.

METAL WORKING MACHINE.

APPLICATION men AUG. 16. 1912.

1;].81 ,1 '1 3, Patented May 2, 1916.

3 SHEETS -SHEET I,

"M 1 raga,

C. M. CONRADSON.

METAL WORKING MACHINE.

APPLICATION FILED Aue.16,1912.

Patented May 2, 1916.

3 SHEET SHELT 2 C. M. CONRADSON.

METAL WORKING MACHINE.

APPLICATION HLED meme. 19:2.

1,181,1 13. Patented May2, 1916.

3 $HEETSSHEET 3- gwingssesx J I W 4 W a rw ATEZE'T a iil l'iWli uni-Mann l Fianna l :1. 'lm'sin my inn w. *3 is a central \Y l'ii table; Fig. 4 is a sidv view of Certain ziilil QNiQZHi fi m driving connectinns to the work table; Fig.

2.: 'ili 'iL ii is .3 i." a! nil View of tin) milling attachment,

to gie-rfimn tlw vertical shaft wnn tell ihsiewitli being;

ogn-mtiwns lxmken away; and Fig. 6 is a in gmentzny iv? by the \lPt-ail of the {*n i of the cool spindle and w flu; 12min its mounting with the angular milling at i taclnnc-m removed,

1m. upvmtim i' 1 The tool bar or spindle 1. in like manmanta- 11 wt {min in x x Ui prim n01 in my saicl prior application, is

1 mountsxl in :1 saclfil? or support 2 for rOtaii i and endwise nim'mnent in ariable an" for Qitll'cl' movement without the and the: saddle is slidalily innnnted w paced-apart ways on an upright column 3 with npei'zitive mnnwiions for taversing n am Dower feed. movements. The Outer end .irflilv thereon when desired.

9 Mil sp t hearing sleeve 6 zontal ways i on the bed 5, with operative connections for traversing and power feeding the same across said bed at will, all as more fully described later and set forth in further specific detail in my said prior application. The saddle or tool support 2 is provided with projecting sleeve or collar bearings 6, T at its opposite sides to afford widely separated bearing supports for the tool spindle or bar 1. as in my said earlier machine, but in the present case the inner bearing sleeve or collar 6 serves a further purpose of a support and carrier for the vertical and angular milling attachment which forms an important featureof the present invention. For this purpose, the sleeve bearing 8 is preferably extended to somewhat greater length than it would ordi' narily have for its spindle-bearing function alone, and it has mounted thereon for endwise sliding adjustment a sleeve 8, this sleeve being shown-as held from turning on the by a key-and-groove connection A) and adapted to be securely clamped in adjusted position by being slitted for a distance from its end, as seen at 10, and drawn together in clamped engagement with the sleeve 6 by a screw bolt 11.

T he sleeve 8 has a circular flange 12 at its outer end through which is passed a series of clamp bolts 13 having their heads 14 fitted in an annular undercut slot 15 of the milling head 16, this head being shown as held in accurate guided relation to the flange 12 in its angular adjustments by arr nular interengaging portions 17 of these two members. The milling head 16 is pro vided with spaced apart bearings 18, 19 for the shaft 20 of a millingcutter, this shaft being shown as fitted in bearing bushings and held from endwise displacement in usual manner by backing washer and nut devices. The shaft 20 is adapted to carry a milling or facing head 21 at its end, and it is also preferably provided with a seat 22 centrally between its bearings to receive a cutter which may be a milling cutter in alinement with its axis of angular adjustment. Driving impulse is imparted to shaft "20 by a bevel pinion driven engagement with a bevel gear 24 fixed at the end of a sleeve The sleeve 25 is detachably fixed for rotation with the tool. spindle 1 at its end, in any suitable manner, for instance, b having a key engagcd in the key way 0 the spindle and in addition to carrying the gear 21 also has fixed thereto or formed therewith a spiral gear 26 in driving engagement with a mating spiral gear 27 slidably splined on a vertical shaft 28, this gear being held in a bracket extension :29 from the sleeve 8 by having ahub 30 formed therewith journaleol in such bracket. The sleeve 8 as shown is provided with an inwardly extending flange 23 fixed thereto and in 31 engaged by a washer 32 which cooperates to hold the gear sleeve 25 from longitudinal displacement relative to the sleeve 8 and the parts carried thereby. It will be observed that the sleeve 8 is considerably longer than would be necessary for its function of holding the milling attachment in place and the purpose of this added length 15 to permit a substantial degree of in and out adjustment of the milling attachment relative to the saddle, the extra length of the sleeve 6 cooperating to this end and thus the milling attachment can be adjusted out at will so as to have a considerable degree of overhang from the saddle to better engage work pieces on the table under special conditions. In such outward adjustment of the milling attachment the tool spindle 1 may of course be adjusted outward accordingly by the mechanism which moves it endwise in other uses.

The vertical shaft 28 which as explained receives driving impulse from the spindle 1 through the spiral gears '26, 27 is connected to control the rotating traversing and feed movements of the universal table 33 and for this purpose a bevel pinion 34 having a journal hearing 35 carried by a bracket 36 is fixed at the lower end of said shaft and drives a bevel pinion 37 also having a journal bearing 38 carried by the bracket 36 which bracket is fixed at the base of the column 3. The pinion 37 is slidably splined to a horizontal shaft 39 extending across the machine and journaled at its end in bearing blocks 40, 41. The bearing block 41 also furnishes bearing for one end of the shaft 42 which extends outward along one side of the bed at right angles to the shaft 39 which is in driving engagement therewith by means of novel gears 43 carried in the block 41. The shaft 42 which has its outer end journaled in the bearing block 44 is adapted to drive a shaft 45 extending between the work table ways in either direction by means of bevel pinions 46 both in driving engagement with the bevel pinion 47 fixed on the end of shaft 4!, the pinions 46 being loosely fitted on shaft 42 and journaled so as to be held against endwise movement in bearin blocks 48. The pinions 46 have clutch aces 49 rigid therewith and are adapted to be selectively connected with the shaft 42 to be driven thereby by means of cooperative clutch faces 50 slidably splined on the shaft 42 and connected to be simultaneously operated by a shifter bar 51 having forked prongs 52 engaging in annular grooves 53 formed with said clutch faces. The clutch faces 50 are held spaced apart by this means to distances so that both may be disengaged as seen in Fig. 4 and thus the shaft 45 freed from driving engagement or either of the pinions 46 may be connected so as to drive said shaft in the corresponding direction at of moving a tool arried thereby in any dirertion. rotating :1 tool either at high or low speeds. with or without a variable aeompaniinent otendwise movement, reeiproating a 100i surh as a slotter without rotary movement. or rotating a tool while moving it bodily laterally. The deserihed universal \vorh table in eomhination and eooperative relation to sueh a multiple use tool bar enables the marhine to render sei'viee not only lor the usual maehine shop perations but al o for various and sundry speeial kinds otwork for \vllieh even no ordinary eominerrial type sperial-worlv' maehine is adapted. in this (onneetion it is to he noted that the work table is geared up in delinite timed relation to the tool spindle drive. be ing perated therefrom by means of the vertieal shaft 22h and the described eonnew tions so that when required the power movement of the table ran be regulated in preeise relation to the tool movement. While my imprmed universal poner eontrolled \vork table thus has valuable and distinetive utilities for general uses and more speeitie utilities in eonjunetion and eomhination with a multiple use tool bar as set t'orth it has still further and more extended advantages and uses in eonnertion with the vertieal and angularly adiilstal le milling attaehinent which as explained ran not only he angularly adjusted to any angle y hatsoever but is also adjustable in and out on the bearing sleeve i so as to have any desired degree of "overhang" out from the saddle and is thus adapted to present a milling tool to attaek the work from any direetion and with any sort of a feed sired, the direetion of feed movement being in any required direetion. sueh direetion being instantly changeable. as desirable for finishing eurved surfaces on the work.

It to be understood that my improved milling attael'i'na-nt is valuable and useful as an aeeessory of the machine with the mul tiple use tool bar whether or not it be employed in eonjunetion with a universal work table as set forth. though it has the deseribed special utilities in eonneetion with such work table.

The special means for imparting rotary and endwise movement at *ariable rates and ratios or one movement without the other. and bodily lateral movement by hand or power actuated means to the tool spindle. form no part of the present invention and are specifically and fully set forth in my said prior application wherein they are duly elaimed. The eonstruetion for etl'eeting such movements is preferably similar to that of said application, the tool spindle 1 being shown as provided with a spiral groove 92 engaged by a nut 93 having independent bearing 94 in the saddle, this nut having one end equipped with gear teeth 95 meshin; ith pinions 9 .3 of which there are use v three ournaled in, the saddle. tl ese pn: also meshing with internal teeth at r side of a planetary gear 97, \vhieh has intril teeth at its other sid meshing With pin 9S \vhieh are earrieil on a gear 05) ';rurnaled in the saddle, the gear 99 being eonneeted with the driving train for im parting eudivise teed movements to the saddle. The pinions 98 are also in mesh with a gear 1 on the end of a driving sleeve l l iournaled in the saddle and splined to the tool bar at opposite sides thereof. Since the gears 3 and 100 are oi the same size and sinre the pinions t t; and 93 are also of the same size it t'ollons that nith the gear f stationarv. the feed sleeve f a will turn with the tool spindle l and its drive sle ve ltll. the planetary gear 91" then turning idly. and the tool spindle being rotated without endwise n'iovement: as rotation is imparted to the gear f ll however it. will through the pinons $18. gear 97 and p-inions 5'6. transmit differential rotation to the feed sleeve. 93 relative to the tool spindle l and hence by reason of the spiral groove eng gement between these parts etleet. th I so movt ment of the tool spiiulle along with its rotation. the rate of sueh endivh movement being determined by the speed \vhieh the gear 9%) is driven. It ivill be further seen that it the drive sleeve ltll be held Sltlltl ltli'li' and the gear 99 rotated, the described em;- neetions will etl'eet the endwise mo eme of the tool spindle without. tnri'iing iliEI'QUi. its rotation being prevei'ited by its splined eonneetion with the sleeve 101. The sleeve 101 is driven by a gear 102 engaged by a pinion 103 fixed on a shaft 11% which is reversibly and variahly driven by a change and reverse gear system 105 which need not be further specifically described herein. The gear 99 is variably and reversibly rotated through a ehange gear system of which a portion is shown at 106. All these driving connections are preferably controlled from the saddle by eontrolling devices designated generally 107. The prime power shaft is shown as vertical shaft 108 having reversible connections 109 to the various driven parts. This shaft through suitable eonneetions is adapted to not only rotate and move endwise the tool spindle but it also operates to move the saddle vertically and also to move the eolumn 3 along the bed 4, the latter movement being effected by vertieal shaft 110 having a pinion at its lower end and engaging a rael; 1.11 on the bed. The eonneetions for moving the sad dle on the eolumn and for moving the eolunm on the bed are preferably such as to permit either a rapid power traverse, a power feed at variable speeds or a hand adjustment at will. all as more fully set forth in my said prior application.

with will .spimlle adapted to remain in npvmiiw pwition throughout tlw range of :nljuslmenw.

T. nixn-liinu ul LllQ kind desrribed 00inprism: spindle adapted to (lirertly rcccive a tool, :1 nmunting Llirrrfm perniitLing mtm'y and Pmlwiw lnm'mnents 0f said spindle. with ss 'iarwl apart lwurings therefor, one of said ln-nrings; lmin formed as a proje'rting FllftYlK milling attuclinmnt having :1 sleeve iiflul mm Sfillll bearing slvvvc. with u cutter slml t mounted transverse of will tool spin :2 (lj ustmrnt relative ihvrvm. and driving (IUIlIlHCLlUHi frmn s-aill spimllr to mid (Hilil wlmft 2irrmlgwi to remain in riagag enim'ii through out tlnmng'u of mljnstnwm if mill g-lifli i.

8. A mn'i'liinr Hf the laxul llrmrrilnill CHM prising {i l ll}'ill;;l'2il mlmnn. :2 sii l llli? \cili mill nimnlilc lllim'eun. tool spin llr imnml all for miziry and rnalnisv mownwnl in f-ini l Siilllillk'. i1 milling unitlrr muiinlnl on an axis at rigt angles w z izi sznl lna sa 'l mimi- With its nmimting being l'omnml tn he :Um plieil n1; altnr lnm-m to said saddle tn ha supporleil tl'wrrlay, mil will (wait-2r l'miini? provision ube llii 'vn will spinrllv.

prising an upright column, a saddle vertil'r-Lilly movable thereon, a tool spindle mountml fur rotary and enclwise movenwnt in said middle, and a milling cutter mounted on an axis transverse of said spindle, the mountin g 'ni' said cutter being mined as an attachment to be applied to said saddle, and sup portal therefrom with provisinn 1501 in and out adjustment of tha cutter axis re itive tn the saddle and said rntter having: driving mmwulinn with 5:1 ill foul spindle.

ll). A niacliine of the kind described, comprising an n n'iglil' mluinn, z: sailllll-r vortia-zill inm'v ONE D95 

